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https://issues.apache.org/jira/browse/SPARK-44215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17740368#comment-17740368
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Mridul Muralidharan commented on SPARK-44215:
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Issue resolved by pull request 41762
https://github.com/apache/spark/pull/41762
> Client receives zero number of chunks in merge meta response which doesn't
> trigger fallback to unmerged blocks
> --------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-44215
> URL: https://issues.apache.org/jira/browse/SPARK-44215
> Project: Spark
> Issue Type: Bug
> Components: Shuffle
> Affects Versions: 3.2.0
> Reporter: Chandni Singh
> Assignee: Chandni Singh
> Priority: Major
> Fix For: 3.3.3, 3.5.0, 3.4.2
>
>
> We still see instances of the server returning 0 {{numChunks}} in
> {{mergedMetaResponse}} which causes the executor to fail with
> {{ArithmeticException}}.
> {code}
> java.lang.ArithmeticException: / by zero
> at
> org.apache.spark.storage.PushBasedFetchHelper.createChunkBlockInfosFromMetaResponse(PushBasedFetchHelper.scala:128)
> at
> org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:1047)
> at
> org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:90)
> at
> org.apache.spark.util.CompletionIterator.next(CompletionIterator.scala:29)
> at scala.collection.Iterator$$anon$11.nextCur(Iterator.scala:484)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:490)
> at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:458)
> at
> org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:31)
> at
> org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37)
> at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:458)
> {code}
> Here the executor doesn't fallback to fetch un-merged blocks and this also
> doesn't result in a {{FetchFailure}}. So, the application fails.
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